There are many books that can improve one's thinking ability and confidence. The Analects of Confucius: This book is one of the ancient Confucian classics in China. It contains a lot of wisdom and philosophy that can help people improve their thinking ability and self-confidence. 2. Da Xue: This is one of the classics of ancient Chinese Confucianism and the title of Liang Qichao, a famous modern Chinese ideologist. It contains a lot of content about personal cultivation, moral education and wisdom enlightenment, which can help people improve their thinking ability and self-confidence. Mencius: This is one of the Confucian classics of ancient China. It contains many contents about morality, politics and wisdom, which can help people improve their thinking ability and self-confidence. Tao Te Ching: This is one of the ancient Taoist classics in China. It contains a lot of wisdom about the universe, life and morality, which can help people improve their thinking ability and self-confidence. Zhuangzi: This is one of the ancient Taoist classics in China. It contains a lot of wisdom about freedom, nature and freedom. It can help people improve their thinking ability and self-confidence. These books were all classic works of traditional Chinese culture. They contained a lot of content about personal cultivation, moral education and wisdom enlightenment, which could help people improve their thinking ability and self-confidence. Of course, different people could choose different books to read according to their interests and needs to achieve better results.